Antileishmanial Activity of a New ent-Kaurene Diterpene Glucoside Isolated from Leaves of Xylopia excellens R.E.Fr. (Annonaceae)

Abstract

This work describes a new ent-kaurene diterpene glucoside, 7β-O-β-D-glucopyranoside-ent-kaur-16-ene, from the leaves of Xylopia excellens R.E.Fr. (Annonaceae). The compound showed high in vitro antileishmanial activity (IC50 of 15.23 ± 0.64 µg/mL) towards promastigote forms of Leishmania amazonensis, and low cytotoxicity against J774A1 cells (SI of 1.96).